/*      $OpenBSD: execute.c,v 1.16 2022/08/08 17:57:05 op Exp $ */
/*      $NetBSD: execute.c,v 1.3 1995/03/23 08:34:38 cgd Exp $  */

/*
 * Copyright (c) 1980, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/stat.h>

#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#include "monop.ext"

typedef struct stat     STAT;
typedef struct tm       TIME;

static char     buf[257];

static bool     new_play;       /* set if move on to new player         */

static void     show_move(void);

/*
 *      This routine takes user input and puts it in buf
 */
void
getbuf(void)
{
        char    *sp;
        int     tmpin, i;

        i = 1;
        sp = buf;
        while (((tmpin = getchar()) != '\n') && (i < (int)sizeof(buf)) &&
            (tmpin != EOF)) {
                *sp++ = tmpin;
                i++;
        }
        if (tmpin == EOF) {
                printf("user closed input stream, quitting...\n");
                exit(0);
        }
        *sp = '\0';
}
/*
 *      This routine executes the given command by index number
 */
void
execute(int com_num)
{
        new_play = FALSE;       /* new_play is true if fixing   */
        (*func[com_num])();
        notify();
        force_morg();
        if (new_play)
                next_play();
        else if (num_doub)
                printf("%s rolled doubles.  Goes again\n", cur_p->name);
}
/*
 *      This routine moves a piece around.
 */
void
do_move(void)
{
        int     r1, r2;
        bool    was_jail;

        new_play = was_jail = FALSE;
        printf("roll is %d, %d\n", r1 = roll(1, 6), r2 = roll(1, 6));
        if (cur_p->loc == JAIL) {
                was_jail++;
                if (!move_jail(r1, r2)) {
                        new_play++;
                        goto ret;
                }
        }
        else {
                if (r1 == r2 && ++num_doub == 3) {
                        printf("That's 3 doubles.  You go to jail\n");
                        goto_jail();
                        new_play++;
                        goto ret;
                }
                move(r1 + r2);
        }
        if (r1 != r2 || was_jail)
                new_play++;
ret:
        return;
}
/*
 *      This routine moves a normal move
 */
void
move(int rl)
{
        int     old_loc;

        old_loc = cur_p->loc;
        cur_p->loc = (cur_p->loc + rl) % N_SQRS;
        if (cur_p->loc < old_loc && rl > 0) {
                cur_p->money += 200;
                printf("You pass %s and get $200\n", board[0].name);
        }
        show_move();
}
/*
 *      This routine shows the results of a move
 */
static void
show_move(void)
{
        SQUARE  *sqp;

        sqp = &board[(int)cur_p->loc];
        printf("That puts you on %s\n", sqp->name);
        switch (sqp->type) {
        case SAFE:
                printf("That is a safe place\n");
                break;
        case CC:
                cc();
                break;
        case CHANCE:
                chance();
                break;
        case INC_TAX:
                inc_tax();
                break;
        case GOTO_J:
                goto_jail();
                break;
        case LUX_TAX:
                lux_tax();
                break;
        case PRPTY:
        case RR:
        case UTIL:
                if (sqp->owner < 0) {
                        printf("That would cost $%d\n", sqp->cost);
                        if (getyn("Do you want to buy? ") == 0) {
                                buy(player, sqp);
                                cur_p->money -= sqp->cost;
                        }
                        else if (num_play > 2)
                                bid();
                }
                else if (sqp->owner == player)
                        printf("You own it.\n");
                else
                        rent(sqp);
        }
}


#define MONOP_TAG "monop(6) save file"
/*
 *      This routine saves the current game for use at a later date
 */
void
save(void)
{
        int i, j;
        time_t t;
        struct stat sb;
        char *sp;
        FILE *outf;

        printf("Which file do you wish to save it in? ");
        getbuf();

        /*
         * check for existing files, and confirm overwrite if needed
         */
        if (stat(buf, &sb) == 0
            && getyn("File exists.  Do you wish to overwrite? ") > 0)
                return;

        umask(022);
        if ((outf = fopen(buf, "w")) == NULL) {
                warn("%s", buf);
                return;
        }
        printf("\"%s\" ", buf);
        time(&t);                       /* get current time             */
        fprintf(outf, "%s\n", MONOP_TAG);
        fprintf(outf, "# %s", ctime(&t));       /* ctime() has \n */
        fprintf(outf, "%d %d %d\n", num_play, player, num_doub);
        for (i = 0; i < num_play; i++)
                fprintf(outf, "%s\n", name_list[i]);
        for (i = 0; i < num_play; i++)
                fprintf(outf, "%d %d %d %d\n", play[i].money, play[i].loc,
                    play[i].num_gojf, play[i].in_jail);
        /* Deck status */
        for (i = 0; i < 2; i++) {
                fprintf(outf, "%d %d %d\n", (int)(deck[i].num_cards),
                    (int)(deck[i].top_card), (int)(deck[i].gojf_used));
                for (j = 0; j < deck[i].num_cards; j++)
                        fprintf(outf, "%ld ", (long)(deck[i].offsets[j]));
                fprintf(outf, "\n");
        }
        /* Ownership */
        for (i = 0; i < N_SQRS; i++) {
                if (board[i].owner >= 0) {
                        if (board[i].type == PRPTY)
                                fprintf(outf, "%d %d %d %d\n", i, board[i].owner,
                                    board[i].desc->morg, board[i].desc->houses);
                        else if (board[i].type == RR || board[i].type == UTIL)
                                fprintf(outf, "%d %d %d 0\n", i, board[i].owner,
                                    board[i].desc->morg);
                }
        }
        fclose(outf);

        strlcpy(buf, ctime(&t), sizeof buf);
        for (sp = buf; *sp != '\n'; sp++)
                continue;
        *sp = '\0';
        printf("[%s]\n", buf);
}
/* 
 * If we are restoring during a game, try not to leak memory.
 */
void
game_restore(void)
{
        int i;

        free(play);
        for (i = 0; i < num_play; i++)
                free(name_list[i]);
        restore();
}
/*
 *      This routine restores an old game from a file
 */
void
restore(void)
{
        printf("Which file do you wish to restore from? ");
        getbuf();
        if (rest_f(buf) == FALSE) {
                printf("Restore failed\n");
                exit(1);
        }
}
/*
 *      This does the actual restoring.  It returns TRUE if the
 *      backup was successful, else FALSE.
 */
int
rest_f(char *file)
{
        char *sp;
        int  i, j, num;
        FILE *inf;
        char *st, *a, *b;
        size_t linesize;
        ssize_t len;
        STAT sbuf;
        int  t1;
        short t2, t3, t4;
        long tl;

        printf("\"%s\" ", file);
        if (stat(file, &sbuf) == -1) {          /* get file stats       */
                warn("%s", file);
                return(FALSE);
        }
        if ((inf = fopen(file, "r")) == NULL) {
                warn("%s", file);
                return(FALSE);
        }

        num = 1;
        st = NULL;
        linesize = 0;
        len = getline(&st, &linesize, inf);
        if (len == -1 || len != strlen(MONOP_TAG) + 1 ||
            strncmp(st, MONOP_TAG, strlen(MONOP_TAG))) {
badness:
                warnx("%s line %d", file, num);
                free(st);
                fclose(inf);
                return(FALSE);
        }
        num++;
        if (getline(&st, &linesize, inf) == -1)
                goto badness;
        num++;
        if ((len = getline(&st, &linesize, inf)) == -1 || st[len - 1] != '\n')
                goto badness;
        st[len - 1] = '\0';
        if (sscanf(st, "%d %d %d", &num_play, &player, &num_doub) != 3 ||
            num_play > MAX_PL || num_play < 1 ||
            player < 0 || player >= num_play ||
            num_doub < 0 || num_doub > 2)
                goto badness;
        if ((play = calloc(num_play, sizeof(PLAY))) == NULL)
                err(1, NULL);
        cur_p = play + player;
        /* Names */
        for (i = 0; i < num_play; i++) {
                num++;
                if ((len = getline(&st, &linesize, inf)) == -1 ||
                    st[len - 1] != '\n')
                        goto badness;
                st[len - 1] = '\0';
                if ((name_list[i] = play[i].name = strdup(st)) == NULL)
                        err(1, NULL);
        }
        if ((name_list[i++] = strdup("done")) == NULL)
                err(1, NULL);
        name_list[i] = NULL;
        /* Money, location, GOJF cards, turns in jail */
        for (i = 0; i < num_play; i++) {
                num++;
                if ((len = getline(&st, &linesize, inf)) == -1 ||
                    st[len - 1] != '\n')
                        goto badness;
                st[len - 1] = '\0';
                if (sscanf(st, "%d %hd %hd %hd", &(play[i].money), &t2,
                    &t3, &t4) != 4 ||
                    t2 < 0 || t2 > N_SQRS || t3 < 0 || t3 > 2 ||
                    (t2 != JAIL && t4 != 0) || t4 < 0 || t4 > 3)
                        goto badness;
                play[i].loc = t2;
                play[i].num_gojf = t3;
                play[i].in_jail  = t4;
        }
        /* Deck status; init_decks() must have been called. */
        for (i = 0; i < 2; i++) {
                num++;
                if ((len = getline(&st, &linesize, inf)) == -1 ||
                    st[len - 1] != '\n')
                        goto badness;
                st[len - 1] = '\0';
                if (sscanf(st, "%d %d %hd", &t1, &j, &t2) != 3 ||
                    j > t1 || t1 != deck[i].num_cards || j < 0 ||
                    (t2 != FALSE && t2 != TRUE))
                        goto badness;
                deck[i].top_card = j;
                deck[i].gojf_used = t2;
                num++;
                if ((len = getline(&st, &linesize, inf)) == -1 ||
                    st[len - 1] != '\n')
                        goto badness;
                st[len - 1] = '\0';
                a = st;
                for (j = 0; j < deck[i].num_cards; j++) {
                        if ((tl = strtol(a, &b, 10)) < 0 || tl >= 0x7FFFFFFF ||
                            b == a)
                            goto badness;
                        deck[i].offsets[j] = tl;
                        b = a;
                }
                /* Ignore anything trailing */
        }
        trading = FALSE;
        while ((len = getline(&st, &linesize, inf)) != -1) {
                num++;
                if (st[len - 1] != '\n')
                        goto badness;
                st[len - 1] = '\0';
                /* Location, owner, mortgaged, nhouses */
                if (sscanf(st, "%d %hd %hd %hd", &t1, &t2, &t3, &t4) != 4 ||
                    t1 < 0 || t1 >= N_SQRS || (board[t1].type != PRPTY &&
                    board[t1].type != RR && board[t1].type != UTIL) ||
                    t2 < 0 || t2 >= num_play ||
                    (t3 != TRUE && t3 != FALSE) ||
                    t4 < 0 || t4 > 5 || (t4 > 0 && t3 == TRUE))
                        goto badness;
                add_list(t2, &(play[t2].own_list), t1);
                /* No properties on mortgaged lots */
                if (t3 && t4)
                        goto badness;
                board[t1].owner = t2;
                (board[t1].desc)->morg = t3;
                (board[t1].desc)->houses = t4;
                /* XXX Should check that number of houses per property are all
                 * within 1 in each monopoly
                 */
        }
        free(st);
        fclose(inf);
        /* Check total hotel and house count */
        t1 = j = 0;
        for (i = 0; i < N_SQRS; i++) {
                if (board[i].type == PRPTY) {
                        if ((board[i].desc)->houses == 5)
                                j++;
                        else
                                t1 += (board[i].desc)->houses;
                }
        }
        if (t1 > N_HOUSE || j > N_HOTEL) {
                warnx("too many buildings");
                return(FALSE);
        }
        /* Check GOJF cards */
        t1 = 0;
        for (i = 0; i < num_play; i++)
                t1 += play[i].num_gojf;
        for (i = 0; i < 2; i++)
                t1 -= (deck[i].gojf_used == TRUE);
        if (t1 != 0) {
                warnx("can't figure out the Get-out-of-jail-free cards");
                return(FALSE);
        }

        strlcpy(buf, ctime(&sbuf.st_mtime), sizeof buf);
        for (sp = buf; *sp != '\n'; sp++)
                continue;
        *sp = '\0';
        printf("[%s]\n", buf);
        return(TRUE);
}